Kenwood RXD-501 Service Manual page 26

AO AP
TUNER UNIT
(X05-490X-XX) RXD-501(T,E) RXD-551(T,E) RXD-701(T,E) RXD-751(T,E) RXD-501E(E2) RXD-551E(E2) RXD-701E(E2) RXD-751E(E2) RXD-501W(Q) RXD-551W(Q) RXD-701W(Q) RXD-751W(Q)
X
A
Q65 0V Q62
1 R70
1M
MW:0.6V 3.6V
0V
LW:0V
X
W51
L62
0V
2
Q61
0V
L61 1uH
(T,E,E2) TYPE: A1 (W02-2640-05)
3 2 GND
3 GND
D3 C25
1 ANT 6P
C20
4P
7 GND
4
TR1 :2SK360
TR2 :2SC2620QB
TR3-5 :2SC2413K or 2SC2778
D1-3 :1SV225 or HVM16
(Q) TYPE: A1 (W02-2641-05)
2 GND
3 GND
J1
C20 D3 C25
1 ANT 10P 18P
FM
5
75
GND
AM ANT
J2
7 GND
TR1 :2SK360
TR2-5 :2SC2413K or 2SC2778
D1-3 :1SV225 or HVM16
D4 :DA204K
6
IC1 : LA1836 D1,33,61,62
IC2 : LC72131
IC3 : NJM2904M D31
Q1,2 : 2SC2714(R,O)
Q3,81,64,103 : 2SA1576A(R,S) or
2SB1218A(Q,R) or D32
2SA1586(Y,GR) D81
Q31,32,61,62 : 2SC4081(R,S) or
2SD1819A(Q,R) or
2SC4116(Y,GR)
7 Q63 : 2SC2878(B) D101
Q101,102 : 2SD2114K
AQ AR
R68
2.2K
MW: 0V
LW: 0.7V
W72
C63 9P R62 1M
MW: 0.6V MW: 0V
LW: 0V LW: 3.7V
12.3V
X 12.3V
W55
Q64
C62
3.7V 0.033
R66
Q63
1.5K
11.9V
MW: 0V R63
LW: 4.4V
47K
W11
FM FRONT END
VT
J2 0
T1
TR2
R2 C2 D1 C6
TR1
33 3P 4P
IF-OUT
C28
18P
J1 R10
VCC
0 220
R7
100K
TR4
C9 C12
C16
2P 12P
TR3 TR5
10P
D2
OSC
FM FRONT END
VT
J2 0
T1
TR2
R2 C2 D1 C6
TR1
68 6P 10P
C28
5P
J1 R10
VCC
0 180
R7
100K IF-OUT
TR4
C9 C12
C16
2P 15P
TR3 TR5
10P
D2
OSC
: 1SS133 or
HSS104
: MTZJ8.2(B) or
VT VOLTAGE
UZ-8.2BSB or
BAND FREQ VT
RD8.2ES(B) or
LF 2.3V
FM
HZS8.2N(B)
HF 7.7V
: MA111 AM LF 1.2V
(MW) HF 4.6V
: MTZJ5.1(B) or
UZ-5.1BSB or
RD5.1ES(B) or
HZS5.1N(B)
SIGNAL LINE
: MTZJ3.3(B) or
GND LINE
HZS3.3N(B2)
+B
+B LINE
-B
-B LINE
AS AT
L62
W51
W54
W52
X
W55
B
+12V +12V
11.9V
FM IF
AMP
5 R2
X 1.9V
W61
220
Q1
X
8 R57 CF1
100
+B +B
10.0V
+ +
(0V)
4
+B
11.9V(0V)
VT
R90 R89
6
5.6K 100
1/4W
5.1V + +
6.4V
+
5
5.0V
R88 1K
0.9V
2.6V
IC2
PLL
0.9V
4
8
REFERENCE PHASE DETECTOR UNLOCK
DIVIDER CHARGE PUMP DETECTOR
1 SWALLOW COUNTER
2 1/16, 1/17 4bit
12bit
PROGRAMMABLE
DIVIDER
6
C2B I/F DATA SHIFT REGISTER LATCH
12.2V
5.0V
0V
2.6V
X81
7.2MHz
R84 10K
R80 1K
) 2 (
R81 1K
) 4 (
R82 1K
C92 ) 5 (
470P R83 1K
) 3 (
AU AV
TUNED
CN2
1 2
+
+12V R36 39K
C61
0.01
1.8V
R9
100
3.6V
AM
CF2
10.3V ALC
OSC
10.5V
C5 C6
BUFF
Q2
0.01 0.01 1.9V
1.4V
1.2V
LEVEL
DET
12.2V S-CURVE
C80
100P
FM
0V
IF FM
ATT CONTROL
DET
R17
+12V
620 Q3
R20
1.2K
11.9V
3.6V
+12V
12.0V
+B
8.1V
BAND
SW(FM)
Q81
+B
+ +
0.2V
12.2V
0V
R93
1.2K
11.5V
0V
2.5V 11.9V
8.1V
+
UNIVERSAL
+12V
COUNTER
AW AX
2.9V
+
X
W79
+
0V 2.9V 2.6V 2.9V
3.9V
2.9V
3.9V
AM AM
MIX RF.AGC
S METER
AGC
AM AM
IF
DET
AM/
FM
IF
COMP
BUFF
AM/
FM
TUNING
SW
DRIVE
AM
FM
REG GND
8.1V
R35
3.6V 33K
0V
0V
3.6V
L31
L33
L32
R59
AM IFT
2.2K
DISCRIMINATOR
+B +B
X
C79
100P
+12V